JP2860620B2 - Slitter blade oil applicator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil applicator for a slitter blade, and more particularly, to rotating a slitter blade or two slitter blades disposed opposite to each other by rotating the slitter blade.
For example, the present invention relates to an oil application device that can apply oil to the slitter blade in a timely manner in a slitter device that cuts a corrugated cardboard sheet along a feeding direction.

[0002]

2. Description of the Related Art For example, a slitter device for cutting a continuously fed corrugated cardboard sheet along the feeding direction is known.
A pair of slitter blades are provided above and below the sheet feeding line, and both slitter blades are rotated in opposite directions. These two slitter blades are configured as so-called single blades, and are positioned so that the flat sides of the blade edges overlap each other by a predetermined length. By horizontally feeding the corrugated cardboard sheet between both slitter blades, the sheet is cut along the feeding direction.

[0003] Incidentally, since the thickness of these single-blade slitter blades is large, if the length of the portion where the upper and lower blades overlap is not optimally set with respect to the thickness of the corrugated cardboard sheet, it is not possible to cut the slit when the sheet is cut. The slitter blade crushes the cut end of the sheet, and the cut end lacks sharpness and becomes dirty, resulting in poor quality. That is, in order to sharpen the cut of the corrugated cardboard sheet and perform good cutting,
It is necessary to precisely adjust the length of the overlapping portion of the flat surfaces of the upper and lower slitter blades in accordance with the thickness of the sheet, but this operation is a very complicated operation requiring skill. In addition, the interval between the overlapping portions of the two slitter blades has a great influence on the quality of the cut edge of the corrugated cardboard sheet, so that it is necessary to set the interval very strictly, and this adjustment operation takes time.

In order to cope with the above-mentioned problem, a very thin (2 mm or less) disk-shaped slitter blade is rotated at a high speed of about 1.5 to 2 times the feeding speed of the corrugated cardboard sheet. Accordingly, a slitter for cutting a corrugated cardboard sheet has been proposed. In this slitter, since one slitter blade is used, the operation of adjusting the slitter blade for the corrugated cardboard sheet can be simplified. Further, since the slitter blade is extremely thin, the slitter blade has an advantage that the cut end of the cardboard sheet can be prevented from being crushed.

[0005]

The single-slit type slitter using the above-mentioned thin slitter blade, or the two-slit type slitter which has been more widely used than before. However, the following difficulties are inherent in performing the slitting operation. That is, the slitter blade is
Obviously, the cutting of the corrugated cardboard involves friction, which does not give good results for the cut condition in the sheet. Also, due to the occurrence of the friction, the cutting edge of the slitter blade always has heat during slitting,
This leads to the inconvenience of reduced sharpness. The slitter blade generates paper dust at the time of cutting the corrugated cardboard sheet and scatters it around, which is one of the causes of lowering the working environment. When the object to be cut is a corrugated cardboard sheet, the core paper and the liner are glued in the upstream manufacturing process prior to the cutting. However, the corrugated cardboard sheets are slitted by a slitter device arranged on the downstream side of the production line. At this time, the glue is often not yet dried.
Therefore, glue adheres to the edge of the slitter blade when cutting the sheet. Since the glue on this blade causes paper dust to adhere,
The cutting resistance to the sequentially fed corrugated cardboard sheet is increased.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned disadvantages inherent in the slitter apparatus, and it has been proposed to solve the above problem. Can be suppressed without having heat,
Therefore, it is possible to provide a means that can prolong the life of the cutting edge, maintain the cut surface of the sheet well, and prevent the paper dust from scattering around when the sheet is cut, so as not to lower the working environment. Aim. Another object of the present invention is to provide a means for cutting a corrugated cardboard sheet, in which the glue adhering to the cutting edge of the slitter blade can be removed in a timely manner, and the sheet cutting resistance can always be kept low.

[0007]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and achieve the intended object, the present invention provides a slitter head which freely moves along a horizontal guide rail and is stopped at an arbitrary position. Pivotally supported by this slitter head,
A yoke capable of reciprocating between a slitting position and a rest position, a disk-shaped slitter blade rotatably supported by the yoke, and rotationally driven in a transport direction of a sheet to be slit, and feeding of the sheet In a slitter device comprising a sheet receiving means opposed to the slitter blade with a line interposed therebetween, an oil application member which is disposed in close proximity to a cutting edge rotation region of the slitter blade, and is brought into contact with and separated from the cutting edge of the slitter blade, It is arranged to communicate with the oil application member,
An oil tank that supplies a required amount of oil to the oil application member, and an oil application member is moved forward by a timely oil application command to bring the oil application member into contact with the cutting edge of the slitter blade;
And a drive unit for moving the oil application member backward by an appropriate oil application stop command and detaching the oil application member from the cutting edge of the slitter blade.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a slitter blade oil application device according to the present invention. Note that, as the slitter device, a type having one slitter blade described above will be described, but the present invention can also be used with a conventional type having two slitter blades. Of course.

FIG. 1 is a side view showing an oil applicator 10 according to the present embodiment together with a slitter blade 14 attached to a yoke 12. In the slitter device, a guide rail 19 is horizontally disposed in a direction intersecting with the feed line 1 of the corrugated cardboard sheet S, and the slitter head 15 is mounted on the guide rail 19 and moves freely. It is designed to be stopped at any position. The slitter head 15 is connected to the fork-shaped yoke 12.
Is rotatably supported, and can reciprocate between a slitting position indicated by a solid line in FIG. 1 and a rest position indicated by a two-dot chain line. The yoke 12 has a disk-shaped slitter blade 1.
4 is rotatably supported and is driven to rotate in the transport direction of the sheet S to be slitted.

A sheet receiving plate 17 having a required slit 21 formed on a flat surface is positioned horizontally on the feed line 1 of the corrugated cardboard sheet S. The lower cutting edge of the slitter blade 14 is not inserted into the slit 21. Partially exposed by contact. The sheet receiving plate 17 is supported by a head 25 via a bracket 23 below the feed line 1, and the head 25 is movable in the axial direction along another guide rail 27. When the slitter head 15 is shifted in the axial direction along the guide rail 19, the sheet receiving plate 17 also moves the head 2 in synchronization with the shift.
5 shifts in the axial direction. Further, in the conventional two-blade type slitter device, the slitter blade provided below is equivalent to the sheet receiving plate 17. Therefore, the sheet receiving plate 17 in the single-blade slitter and the lower slitter blade in the two-blade slitter are collectively defined as "sheet receiving means" in the claims.

An oil applicator 10 is provided below the sheet receiving plate 17, and an oil applicator 18 in the oil applicator 10 is located close to the cutting edge rotation area of the slitter blade 14. Can be in contact with and separated from the cutting edge 14a. That is, as shown in the figure, the oil application device 10 includes an oil tank 16 containing oil 13 therein, a support member 20 attached to the oil tank 16,
And an oil applying member 18 supported on the upper end of the oil-dispersing member. The oil tank 16 is provided with the lower head 2.
5, the lifting rod 3 of the hydraulic cylinder 29, for example.
The oil tank 16 is fixed to the upper end of the oil tank 1, and is moved up and down by a timely oil application command, and is moved down by the timely oil application stop command. The oil tank 16 is filled with a suitable oil 13, and the support member 20 is mounted vertically with one end immersed in the oil 13. This support member 2
0, oil 13 is applied to the cutting edge 14a of the slitter blade 14.
An oil applying member 18 for applying the oil is provided detachably. As the oil applying member 18, a member such as a felt or a sponge which can be appropriately impregnated with the oil 13 and which can be adapted to the cutting edge 14a of the slitter blade 14 flexibly is used. Further, inside the support member 20, the oil 13 is sucked up from the oil tank 16 by capillary action,
Is filled with a porous member that can be supplied to the substrate.

The oil applying member 18 is formed, for example, in a rectangular shape, and has a slitter blade 14 on its upper surface as shown in FIG.
A V-shaped notch 18a is provided in accordance with the rotation direction of. The cut 18a is provided at the same angle as the cut angle at the cutting edge 14a of the slitter blade 14, as shown in the figure, and as shown in FIG.
4a is set so as to face the surface, and a slight round is formed in the valley along the rotation of the cutting edge 14a.
Accordingly, as described later, the glue attached to the cutting edge 14a of the slitter blade 14 can be peeled off by the oil 13 that has penetrated the oil application member 18.

(Regarding the Second Embodiment) FIG. 4 shows another embodiment of the oil applicator 10, in which the yoke 12 supporting the slitter blade 14 is provided with a fluid pressure cylinder 29.
Is installed. The oil tank 16 is fixed to the tip of a piston rod 31 extending horizontally leftward from the cylinder 29 in the drawing. The oil application member 18 is provided between the oil tank 16 and the slitter blade 14 via an attachment member 33. That is, the fluid pressure cylinder 2
If the piston rod 31 is extended to the left by urging the oil application member 9, the oil application member 18 becomes the cutting edge 14 a of the slitter blade 14.
And the slitter blade 14 can be moved in a direction perpendicular to the sheet feeding direction according to the cutting width of the corrugated cardboard sheet S. Fluid pressure cylinder 2
When the piston rod 31 is retracted to the right by urging the oil application member 9 backward, the oil application member 18 becomes the cutting edge 14 of the slitter blade 14.
a, and the oil 13 can be applied to the cutting edge 14a.

In the oil applying member 18 according to the second embodiment, as shown in FIG. 5, a V-shaped cut 18a as described in the first embodiment is formed on the surface facing the slitter blade 14.
Is provided. Therefore, the cutting edge 14a of the slitter blade 14
Can come in contact with the valley of the cut 18a. The oil application member 18 has a tube 24 connected to the bottom of the oil tank 16 as shown in FIG.
Is connected to the back side of the mounting member 22a to which the oil applying member 18 is mounted. Therefore, the oil applying member 18
The oil 13 is supplied from the oil tank 16 via the tube 24.

FIG. 6 shows another embodiment of the oil applicator 10 shown in FIG. 5 in which the oil 13 is applied to the cutting edge 14a of the slitter blade 14, and the portion in contact with the cutting edge 14a is, for example, It is composed of a brush. The brush-shaped oil application member 18 is also appropriately selected from those which can appropriately impregnate the oil 13 and which can be adapted to the cutting edge 14a of the slitter blade 14 flexibly. In this example, as shown in the figure, a substantially trapezoidal notch 26a is provided in the center of a pedestal 26 having a planar rectangular shape, and a notch surface forming a cutting edge 14a of the slitter blade 14 is formed on an inner surface of the notch 26a. A large number of hairs made of, for example, a synthetic resin material are implanted in a portion opposed to. This planted part (below
The tube 2 is inserted from the back of the tube
The oil 13 is supplied from the oil tank 16 via 4 and permeates the entire planting portion 28. Further, as shown in the figure, the planting portion 28 is provided in a state where the portions located inside the pedestal 26 overlap each other. Accordingly, the overlapping portion of the implanted portion 28 reaches the cutting edge 14a of the slitter blade 14, and the cutting edge 14a is brought into contact with the implanted portion 28.

(Regarding the third embodiment) Further, as shown in FIG. 7, the back side of the slitter blade 14 (downstream of sheet feeding).
In the above, the oil application member 18 may be provided with a required length along the moving direction of the slitter blade 14.
In this case, the oil tank 16 is configured as a hollow rectangular parallelepiped extending over a range in which the slitter blade 14 moves in the axial direction along the guide rail 19. Also in this case, a fluid pressure cylinder 29 is horizontally disposed at a fixed portion of a slitter device (not shown), and a piston rod 31 of the cylinder 29 has
Each side plate 16a of the oil tank 16 is fixed. Therefore, if the fluid pressure cylinder 29 is urged to retract the piston rod 31 to the left in FIG. 7, the oil application member 18 is completely separated from the cutting edge 14a of the slitter blade 14, and the cutting width of the corrugated cardboard sheet S is reduced. , The slitter blade 14 can be moved. When the fluid pressure cylinder 29 is reversely urged to extend the piston rod 31 rightward, the oil application member 18 moves together with the oil tank 16 and comes into contact with the cutting edge 14a of the slitter blade 14, and the oil 13 Can be applied to the cutting edge 14a. Oil tank 1
6 has a slitter blade 14 as shown in FIGS.
A rectangular long hole 16b communicating with the internal space of the oil tank 16 is provided along the longitudinal direction above the side surface facing the oil tank 16.

As shown in FIG. 8, the oil application member 18 is formed in a rectangular parallelepiped having a dimension slightly shorter than the length of the oil tank 16, and one end of the oil application member 18 has
A protruding portion 18b of a required length is formed by extension along the longitudinal direction. Therefore, the oil application member 18 has a protruding portion 18b whose oil 1 in the oil tank 16 passes through the elongated hole 16b.
3 and the bottom and back sides are
The oil tank 16 is attached to the oil tank 16 in a state where the oil tank 16 is placed on an edge of the oil tank 16. The oil application member 18 is configured such that the oil 13 permeates through the one end portion immersed in the oil 13.

[0018]

According to the oil applicator for a slitter blade according to the present invention having the above-described structure, an appropriate amount of oil can be applied by appropriately bringing the oil applying member into contact with the edge of the slitter blade. Therefore, the friction between the slitter blade and the sheet can be suppressed during the slitting operation, and there is no heat. Therefore, the life of the cutting edge can be prolonged, and the cut surface of the sheet can be favorably held. Further, the paper dust does not scatter around when the sheet is cut, so that the working environment can always be maintained well. Further, when cutting the corrugated cardboard sheet, the glue inevitably adhering to the cutting edge of the slitter blade can be removed in a timely manner by contact of the oil application member, so that the sheet cutting resistance can always be kept low. It has a great effect.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional view showing a slitter blade oil application device according to a preferred embodiment of the present invention.

FIG. 2 is a front vertical sectional view showing an oil applying device for a slitter blade according to the present invention.

FIG. 3 is an enlarged perspective view of a main part showing a felt for applying oil to the cutting edge of the slitter blade in the oil applicator for a slitter blade according to the present invention.

FIG. 4 is a partial longitudinal sectional view showing another embodiment of the slitter blade oil application device according to the present invention.

FIG. 5 is an enlarged perspective view of a main part showing a felt attached to another embodiment of the oil applicator for a slitter blade according to the present invention.

FIG. 6 is an enlarged perspective view of a main part showing another application member attached to another embodiment of the slitter blade oil application device according to the present invention.

FIG. 7 is a partial longitudinal sectional view showing still another embodiment of the slitter blade oil application device according to the present invention.

FIG. 8 is an enlarged perspective view of a main part showing still another embodiment of the slitter blade oil application device according to the present invention.

[Explanation of symbols]

 Reference Signs List 10 oil application device 12 yoke 13 oil 14 slitter blade 15 slitter head 16 oil tank 17 sheet receiving plate 18 oil application member 20 support member

Claims (3)

(57) [Claims] 1. A slitter head (15) which freely moves along a horizontal guide rail (19) and is stopped at an arbitrary position.
And a yoke rotatably supported by the slitter head (15) and capable of reciprocating between a slitting position and a rest position.
(12), a disk-shaped slitter blade (14) rotatably supported by the yoke (12), and driven to rotate in the transport direction of the sheet (S) to be slitted, and a feeder for the sheet (S). In a slitter device comprising a sheet receiving means (17) opposed to the slitter blade (14) with a feed line (l) interposed therebetween, the slitter device is disposed in proximity to a cutting edge rotation area of the slitter blade (14), and the slitter blade ( An oil application member (18) that is brought into contact with and separated from the blade edge of (14), and is disposed so as to communicate with the oil application member (18), and supplies a required amount of oil (13) to the oil application member (18). The oil applying member (18) is moved forward by a timely oil application command, and the oil applying member (18) is brought into contact with the cutting edge of the slitter blade (14). A drive to move the oil application member (18) backward by an application stop command and to separate the oil application member (18) from the cutting edge of the slitter blade (14). Oil coating apparatus of slitter blade characterized by being configured from a stage (29). 2. The coating member (18) is made of a member such as felt or sponge that can be appropriately impregnated with the oil (13) and can be adapted to the cutting edge of the slitter blade (14) flexibly. Slitter blade oil applicator. 3. The slitter according to claim 1, wherein the application member is a member such as a brush which can be appropriately impregnated with the oil and which can be adapted to the cutting edge of the slitter blade flexibly. Blade oil applicator.